How is that at all comparable?

First, pretty sure they waive the unreal engine license royalties for sales on the EGS.

Second, the timed exclusive offers an even lower sales percentage to epic for being exclusive to EGS for that time period. The developer has a choice to get a larger cut in exchange for not listing elsewhere for a period. That's actually competition in action. Offering better deals to persuade developers and customers to your platform.

They are NOT saying if you don't list on the EGS you can't list on PC at all, which would be a more comparable stance to what Apple do.